Rhenium(VII) sulfide is a chemical compound with the formula Re2S7. It has a complex structure, but can be synthesized from direct combination of the elements:[1] ![{\displaystyle {\ce {2Re{}+7S->[{} \atop \Delta ]Re2S7}}}](//wikimedia.org/api/rest_v1/media/math/render/svg/2b520ddb9a9394ac6ce521b8639eaf40c12aa22d)
Alternatively, rhenium(VII) oxide reacts with hydrogen sulfide in 4N HCl to the same end:[2] ![{\displaystyle {\ce {Re2O7{}+7H2S->[{} \atop \Delta ]Re2S7{}+7H2O}}}](//wikimedia.org/api/rest_v1/media/math/render/svg/b758ea0e168e7133a994d38c41584bb0a472735b)
Quick Facts Names, Identifiers ...
Rhenium(VII) sulfide
| Names |
| IUPAC name
Rhenium(VII) sulfide |
| Identifiers |
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| ChemSpider |
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| ECHA InfoCard |
100.031.698 |
| EC Number |
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| UNII |
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InChI=1S/2Re.7S Key: CVHXCQNYOAKCMI-UHFFFAOYSA-N InChI=1/2Re.7S/rRe2S7/c3-1(4,5)9-2(6,7)8 Key: CVHXCQNYOAKCMI-NEHFBHEFAV
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S=[Re](=S)(=S)S[Re](=S)(=S)=S
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| Properties |
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Re2S7 |
| Molar mass |
596.869 g/mol |
| Hazards |
| GHS labelling: |
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Danger |
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H301, H315, H319, H331, H412 |
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P261, P264, P270, P271, P273, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P311, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
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The compound catalyses the reduction of nitric oxide to nitrous oxide and hydrogenation of double bonds. In this regard, it unusually tolerates sulfur compounds, which poison noble metal catalysts.[1]
Rhenium(VII) sulfide decomposes when heated. In vacuum, it generates rhenium(IV) sulfide:
In air, the sulfide oxidizes to sulfur dioxide:
![{\displaystyle {\ce {2Re{}+7S->[{} \atop \Delta ]Re2S7}}}](http://wikimedia.org/api/rest_v1/media/math/render/svg/2b520ddb9a9394ac6ce521b8639eaf40c12aa22d)
![{\displaystyle {\ce {Re2O7{}+7H2S->[{} \atop \Delta ]Re2S7{}+7H2O}}}](http://wikimedia.org/api/rest_v1/media/math/render/svg/b758ea0e168e7133a994d38c41584bb0a472735b)
